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A. CALINAUD.

Feb. 27, 1923.

APPARATUS FOR GIVING WARNING OF AND AFFORDING PROTECTION AGAINST FROST.

HLEDJUNE25,1921.

2 SHE 'S--SHEET la Feb. 27, 1923. A I I 1,446,783.

A. CALINAUD. APPARA US FOR GIVING WARNING OF AND AFFORDING PROTECTION AGAINST FROST.

FILED JUNEZS, 1921. 2 SHEETSSHEET 2.

Fig. 3. v

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KFPJW INTER/5'55 v pacity and the water in the coil nevertheless may be caused to undergo a considerable linear expansion as it begins tofreeze. -l/Vith this construction the movementof the plug 8 is so extensive that it may beeasily and reliably utilized'either to. give warning or to empty the Water from the protected in-' stallation or both. In the illustrated apparatus, the plug 8, will be lowered an inch or more upon freezing of the water in the coil. 7 r The provision of the screw plug 7 enables the air to be completely exhausted from the coil 6, so that the coil may be entirely filled with water, and the feed pipe 11 belng normally open and connectedzto the dischargepipe 1, insures that the coil 6 will be kept full of-water at all times. It will be obvious that the coil 6 were not entirely filled with water in the first instance, or if it were not kept full, the water in the coil might freezewithout the consequent expansion of I o the water resulting in movement of the plug 8 and lever 3; In such a case the water in the protected installation might be frozen without the valve 2, having been opened,

stallations against frost, comprising a normally closed 1 discharge member "through which the water in the protected installation maybe withdrawn, a coil of piping surrounding the wdischarge member and closed at its upper end, and a member mountedon the lower'end'of the coil and adapted to be moved relatively .to the coil when the temperature of the water in the installation, approaches the freezing point.

'2; An apparatus for protecting water in-' stallations against frost, comprising acoil of piping closed at itsupper end and so constructed that the water in the piping will I be frozen before the water in the protected installation, means for normally establish ing liquid communication between the coil 7 of piping and the water circulating system,

of etheprotected installation, said means being constructed so. as to cause liqu d communication between the piping, and said in stallation to" be broken by the formation of ice "in said means before the water in the piping is frozen, and a member mounted on the" lower end of'the coil of piping and adapted to, be moved relatively to'the pipi-ng when the temperature of the water in to be removed so as to enable the air to be completely exhausted from the container, thus permitting the container-to be entirely filled with water, means for establishing liquid communication between the container and the water circulating-system of theinstallation at a low point of the. system, so

as to cause the container to be kept full of water, said means being constru'ctedaso. as tocause liquid communication between'lthe container and said'installation to be broken by, the-formationof ice in said means before the water in the container is frozen, mechanism-for controlling: the discharge of water from said installation, and a member V mounted'on the container and operable on saidv discharge controlling mechanism to cause the water to be emptied from the in the V freezing stallation when 7 the water inthe piping is V expanded'by frost. a.

74:. An apparatus "for protecting water in;

stallations against frost, comprisingfa discharge member for the installation 'andwar water container of great length compared v s with its transverse'dimensionsso as to cause,

the water in-the container' to undergo a largev amount of linearexpan'sion under the ac tion of frost sald water container communieating Wltl'l' said discharge me1nber, jand means for utilizing the linear-expansion of the water to protect the i-installation against damage by frost. I

.7 5. apparatus for protecting installations" against frost, omprising a water container, communicating 1 means "between the water container and a low point of the water circulating system'of the installation so as to causethe water container to bekept full of water at. all'times, saidl container being constructed with: an opening in its upper endnormally closed by. a removable closure so as to enable the air to be completely exhausted from the container, thus permitting the container to be entirely filled with water, and means for utilizing the linear'expansion of the water to. protectthe water installation against damage by frost.

6. Anapparatus for protecting water installations against frost, comprising an insulated discharge member, adapted for communication Withthe lowest point of the protected installation, a valve in the discharge member for controlling the discharge of water from the protected installation, a coil of pipingsurrounding the discharge member, aclosure at the upper end of the V coil of piping adapted to be opened to per- V the piping, thus permitting the piping to be entirely filled with water, a pipe for normally establishing fluid communication between the coil of piping and the discharge member so as to cause the piping to be kept full of water, said pipe being so constructed that water will freeze in it sooner than in the coil of piping so that the liquid communication between the piping and themstallation is broken by the formation of ice in said pipe before the water in the piping begins to freeze, and a member mounted on the coil of piping and operable on the valve of the discharge member, to cause said valve 15 to be opened when the water in the piping is expanded by frost. V

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ARNOLD CALINAUD.

Witnesses: v

R. H. VVILIAMs, WILLEGoUREm. 

